A Referee's Blowing Tool

This page is the CodyCross answer for the clue below from Rainforest, Group 1205, Puzzle 4 (Fraser Island).

Question is: A Referee's Blowing Tool

and the answer is: WHISTLE

Word Meaning:

WHISTLE — A device designed to be placed in the mouth and blown, or driven by steam or some other mechanism, to make a whistling sound.

Definitions from Wiktionary.

A Referee's Blowing Tool - Rainforest CodyCross Answers | CodyCross Solutions